TY - JOUR
T1 - Magnetic study of pressure-induced superconductivity in the [Pd(dmit) 2] salt with spin-gapped ground state
AU - Ishii, Yasuyuki
AU - Tamura, Masafumi
AU - Kato, Reizo
PY - 2007/3
Y1 - 2007/3
N2 - Static magnetic measurements have been applied for the pressure-induced superconducting state in the P21/m phase of EtMe 3P[Pd(dmit)2]2 (Et = C2H 5, Me = CH3 and dmit2- = 1,3-dithiol-2-thione- 4,5-dithiolate, C3S52-), which exhibits valence bond (VB) ordering with a spin gap at ambient pressure. Evidence for bulk superconductivity is given. The pressure dependence of the transition temperature (Tc) is obtained in the pressure range 0.2- 0.5 GPa. A possible relation between the VB order and the superconductivity is suggested on the basis of the phase diagram. The nonlinear magnetization process is analyzed to determine the behavior of the lower critical field (Hc1).
AB - Static magnetic measurements have been applied for the pressure-induced superconducting state in the P21/m phase of EtMe 3P[Pd(dmit)2]2 (Et = C2H 5, Me = CH3 and dmit2- = 1,3-dithiol-2-thione- 4,5-dithiolate, C3S52-), which exhibits valence bond (VB) ordering with a spin gap at ambient pressure. Evidence for bulk superconductivity is given. The pressure dependence of the transition temperature (Tc) is obtained in the pressure range 0.2- 0.5 GPa. A possible relation between the VB order and the superconductivity is suggested on the basis of the phase diagram. The nonlinear magnetization process is analyzed to determine the behavior of the lower critical field (Hc1).
KW - Magnetic susceptibility
KW - Pd(dmit)
KW - Pressure
KW - Superconductivity
KW - Triangular antiferromagnet
KW - Valence bond order
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U2 - 10.1143/JPSJ.76.033704
DO - 10.1143/JPSJ.76.033704
M3 - Article
AN - SCOPUS:33947190901
VL - 76
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - 3
M1 - 033704
ER -